Patrick Gilmore
Patrick was Dr Dale Volker on Stargate Universe, Bernie Ackerman in Stargate SG1 and a Genii soldier in the Atlantis episode Harmony, he also played Trennan on Riese and guest starred on The Killing, Continuum, Fringe, Fairly Legal, Gracepoint, Arrow and Shattered. IMDB Twitter
Rene Auberjonois
Rene played Alar in the Stargate SG1 episode The Other Side and the mysterious Odo in seven seasons of Star Trek Deep Space Nine. He also played Clayton Endicott III in Benson and appeared on Boston Legal, Warehouse 13, The Librarians , NCIS as well as voicing characters on many other shows. IMDB Twitter Behind The Voice
Morris Chapdelaine
Morris played Tenat in three episodes of Stargate SG1 and an Ori Prior, he also played a Wraith in the Atlantis episode Spoils of War and appeared in Ark of Truth, Fringe and BSG. He is also a puppeteer and worked with the Asgard on SG1 and on fourteen episodes of Falling Skies. He is currently working on Van Helsing. IMDB Twitter
Ian Butcher
Ian played an Ori Prior in the Atlantis episode Beachhead and Dannic on four episodes of Stargate Universe. He has also guest starred on Fringe, Continuum, Arrow, Motive and Arctic Air. IMDB